GB1471759A - Manufacture of anthraquinonoid disperse dyes containing bromine - Google Patents

Manufacture of anthraquinonoid disperse dyes containing bromine

Info

Publication number
GB1471759A
GB1471759A GB2987874A GB2987874A GB1471759A GB 1471759 A GB1471759 A GB 1471759A GB 2987874 A GB2987874 A GB 2987874A GB 2987874 A GB2987874 A GB 2987874A GB 1471759 A GB1471759 A GB 1471759A
Authority
GB
United Kingdom
Prior art keywords
bromination
disperse dyes
dinitro
dimethoxy
july
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2987874A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of GB1471759A publication Critical patent/GB1471759A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof
    • C09B1/54—Amino-hydroxy-anthraquinones; Ethers and esters thereof etherified
    • C09B1/545—Anthraquinones with aliphatic, cycloaliphatic or araliphatic ether groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/50—Amino-hydroxy-anthraquinones; Ethers and esters thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Abstract

1471759 Preparing disperse dyes BASF AG 5 July 1974 [7 July 1973] 29878/74 Heading C4P Blue anthraquinone disperse dyes are prepared by reducing 1,5-dinitro-4,8-dimethoxy- or 1,8 - dinitro - 4,5 - dimethoxy - anthraquinone, or a mixture thereof, in oleum containing 20-45% by weight sulphur trioxide, using not less than the stoichiometric amount of sulphur in presence of boric acid at a temperature of not more than 50‹ C. at which temperature the reaction mixture is fluid and then brominating the product. Preferably the final product contains 12 to 30% by weight bromine. The methoxy groups are hydrolysed to hydroxy groups in situ. The starting materials may be prepared by nitrating the corresponding dimethoxyanthraquinones and the three reaction steps, nitration, reduction and bromination may be carried out in a one pot process wherein after reduction the acid strength is reduced to 96% H 2 SO 4 to 5% oleum. Alternatively, the bromination may take place in an inert organic solvent. In both methods bromination takes place at up to 135‹ C. optionally in presence of a halogenation catalyst. Improved dyestuffs are obtained by giving a subsequent treatment with alkaline reagents. The dyes are used in synthetic fibres, e.g. polyesters.
GB2987874A 1973-07-07 1974-07-05 Manufacture of anthraquinonoid disperse dyes containing bromine Expired GB1471759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2334657A DE2334657C2 (en) 1973-07-07 1973-07-07 Process for the preparation of bromine-containing anthraquinoid disperse dyes

Publications (1)

Publication Number Publication Date
GB1471759A true GB1471759A (en) 1977-04-27

Family

ID=5886258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2987874A Expired GB1471759A (en) 1973-07-07 1974-07-05 Manufacture of anthraquinonoid disperse dyes containing bromine

Country Status (11)

Country Link
US (1) US3925427A (en)
JP (1) JPS5043131A (en)
BE (1) BE817375A (en)
CH (1) CH584734A5 (en)
CS (1) CS175479B2 (en)
DD (1) DD112278A5 (en)
DE (1) DE2334657C2 (en)
ES (1) ES428050A1 (en)
FR (1) FR2235983B3 (en)
GB (1) GB1471759A (en)
IT (1) IT1016254B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102942800A (en) * 2012-11-26 2013-02-27 江苏德旺化工工业有限公司 Method for preparing disperse red

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51118354A (en) * 1975-04-10 1976-10-18 Tokio Sakurai Electric wave compound projection system
CN103436046A (en) * 2013-08-20 2013-12-11 杭州帝凯化工有限公司 Method for preparing environment-friendly novel disperse blue 2BLN

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604480A (en) * 1947-08-29 1952-07-22 Celanese Corp 1-amino-2-bromo-4-hydroxy-anthraquinone by hydrolysis of 1-amino 2,4-dibrom anthraquinone
DE1029506B (en) * 1955-03-07 1958-05-08 Bayer Ag Process for the production of dyes for synthetic fibers
BE585015A (en) * 1958-12-04
BE590880A (en) * 1959-06-01
BE614121A (en) * 1961-02-21
CH510722A (en) * 1968-10-30 1971-07-31 Ciba Geigy Ag Process for the production of blue disperse dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102942800A (en) * 2012-11-26 2013-02-27 江苏德旺化工工业有限公司 Method for preparing disperse red

Also Published As

Publication number Publication date
DD112278A5 (en) 1975-04-05
DE2334657C2 (en) 1975-03-27
CH584734A5 (en) 1977-02-15
FR2235983B3 (en) 1977-05-06
ES428050A1 (en) 1976-07-16
CS175479B2 (en) 1977-05-31
DE2334657B1 (en) 1974-08-29
JPS5043131A (en) 1975-04-18
US3925427A (en) 1975-12-09
IT1016254B (en) 1977-05-30
BE817375A (en) 1975-01-08
FR2235983A1 (en) 1975-01-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee